|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Radiolaria - Nassellaria - Crubidae
Original description: Test as with family, conical to subcylindrical, with constrictions between joints Cephalis conical, with horn. Cephalis and thorax usually sparsely perforate, covered with layer of microgranular silica. Outer layer of abdomen and first one or two post-abdominal chamber covered with small irregular polygonal pore frames, remaining chambers with costae superimposed between each row of pore frames.
Original remarks: Crubus, n. gen., differs from Drulantus, n. gen., by having a horn, and by having a lobated test with outer layer of test wall comprised of small irregular polygonal pore frames on the apical portion of the test.
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.